Visual Studio 2010 RTM started giving me 'does not exist in the current context errors'

Question

Just installed the trial version of Visual Studio 2010 RTM.

Now I keep getting :

The name 'NoPanel' does not exist in the current context

Errors (where no panel is just about any control in the .aspx file) also I got several errors trying to deploy pages and it would not send the .cs file over ...or pdfs in the Content directory (even though I had copy always set)...

This is happening on a pair of mixed ASP.NET MVC and Webforms sites.

Answer 1

RTM is the official release ... and it seems to have something to do with the change with CodeFile and CodeBehind. Also with the .NET 4 there is apparently additional namespace checking as well.

Answer 2

This might help.

Answer 3

Right click on the file and click Convert to web application.